Aim of this report is the investigation of suitable operational conditions for the drif{}t chambers MDC III installed in the HADES setup. The simulations performed showed that operating the drif{}t chambers in a mode with nearly constant electron drif{}t velocity in a predominant part of the cell allows a more precise and fast tracking. This is particularly important for electrons and positrons; here the invariant dilepton mass must be reconstructed with high precision to get a resolution of $\Delta M/M\approx 1\%$ for the $\omega$ and $\phi$ mass peaks and thus a chance to verify also small in-medium mass shif{}ts. This helps to realize the physics program at HADES which focuses on the search for such mass shif{}ts to get insight into the in-medium behaviour of hadrons in dense strongly interacting matter.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa.de:bsz:d120-qucosa-29306 |
| Date | 31 March 2010 |
| Creators | Kanaki, Kalliopi |
| Contributors | Forschungszentrum Rossendorf, Institut für Strahlenphysik |
| Publisher | Forschungszentrum Dresden |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | doc-type:report |
| Format | application/pdf |
| Source | Wissenschaftlich-Technische Berichte / Forschungszentrum Rossendorf; FZR-365 Januar 2003 |
| Relation | dcterms:isPartOf:Wissenschaftlich-technische Berichte ; FZR-365 |
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